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DINAME2019
DINAME2019
A Dynamic Winkler Model of Arbitrary Bonding Conditions Between Piled-Raft Foundations and the Soil
Submission Author:
Josue Labaki , SP
Co-Authors:
Josue Labaki, EUCLIDES MESQUITA
Presenter: Josue Labaki
doi://10.26678/ABCM.DINAME2019.DIN2019-0016
Abstract
Models of piled-raft foundations are important in understanding dynamic soil-foundation interaction problems. These models usually consist of a model of surface plate and a model of embedded pile, which are coupled through direct kinematic compatibility and equilibrium at their interface. This results in a perfectly bonded contact condition at the plate-soil and pile-soil interfaces. However, a perfectly bonded contact is an inaccurate model for many practical applications. In this work, we present a model of arbitrary bonding conditions at the plate-soil interface. A Winkler layer is incorporated at that interface so that various continuity and equilibrium conditions can be incorporated. An Indirect-Boundary Element scheme is used to model the fully coupled raft-Winkler layer-pile-soil interaction, which accurately takes into account the energy transfer from and to each part of the system. The model enables the representation of arbitrary conditions between the bounds of perfectly bonded and perfectly uncoupled plate-soil interaction.
Keywords
Dynamic soil-foundation interaction, Winkler layer, BEM-FEM coupling
